.page-faq {
  --faq-panel-radius: 24px;
  --faq-item-radius: 16px;
  --faq-gradient: linear-gradient(135deg, #0A2540 0%, #0B1B2A 100%);
  background:
    radial-gradient(900px 320px at 90% -20px, rgba(255, 108, 44, 0.08), transparent 60%),
    radial-gradient(800px 260px at -10% 20%, rgba(0, 194, 209, 0.09), transparent 55%),
    linear-gradient(180deg, #EAF1F8 0%, #F5F7FA 100%);
  min-height: 100%;
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  padding-top: 28px;
  margin-bottom: 20px;
}

/* ===== 首屏章节预览 ===== */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: end;
  padding-top: 16px;
  padding-bottom: 40px;
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.4fr 1fr;
    gap: 32px;
    padding-bottom: 56px;
  }
}

.page-faq .faq-hero__content {
  background: var(--faq-gradient);
  border-radius: calc(var(--faq-panel-radius) + 6px);
  padding: 40px 28px;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.page-faq .faq-hero__content::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 108, 44, 0.25), transparent);
  pointer-events: none;
}

.page-faq .faq-hero__content::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: 20%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(0, 194, 209, 0.22), transparent);
  pointer-events: none;
}

.page-faq .faq-hero .section-eyebrow {
  display: block;
  color: #FF6C2C;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.3;
  margin: 0 0 16px;
  position: relative;
  z-index: 1;
  color: #FFFFFF;
}

.page-faq .faq-hero__intro {
  position: relative;
  z-index: 1;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  max-width: 600px;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

@media (max-width: 420px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: 1fr;
  }
}

.page-faq .faq-stat {
  background: var(--glass-bg);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 18px;
  padding: 18px 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
}

.page-faq .faq-stat__label {
  display: block;
  font-size: 0.7rem;
  color: var(--color-text-light);
  margin-top: 6px;
  line-height: 1.4;
}

/* ===== 主体双栏布局 ===== */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-top: 8px;
  padding-bottom: 24px;
}

@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

/* ===== 左侧分类导航 ===== */
.page-faq .faq-sidebar {
  position: static;
}

@media (min-width: 992px) {
  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

.page-faq .faq-sidebar__card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--faq-panel-radius);
  box-shadow: var(--shadow-sm);
  padding: 24px 20px;
  overflow: hidden;
}

.page-faq .faq-sidebar__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-info));
}

.page-faq .faq-sidebar__icon {
  width: 76px;
  height: 76px;
  object-fit: cover;
  border-radius: 20px;
  display: block;
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-sidebar__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 18px 0 6px;
}

.page-faq .faq-sidebar__note {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.5;
}

.page-faq .faq-category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

@media (min-width: 992px) {
  .page-faq .faq-category-list {
    display: block;
  }

  .page-faq .faq-category-list li {
    margin-bottom: 8px;
  }
}

.page-faq .faq-category-list a {
  display: block;
  padding: 10px 14px;
  border-radius: 12px;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  line-height: 1.4;
  transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-category-list a:hover,
.page-faq .faq-category-list a:focus-visible {
  background: var(--color-label-bg);
  color: var(--color-accent);
  padding-left: 18px;
}

/* ===== 右侧主内容区 ===== */
.page-faq .faq-main {
  min-width: 0;
  display: grid;
  gap: 56px;
}

.page-faq .faq-section {
  min-width: 0;
}

.page-faq .faq-section .section-eyebrow,
.page-faq .faq-guide .section-eyebrow,
.page-faq .faq-contact .section-eyebrow {
  display: block;
  color: var(--color-info);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-faq .section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-primary);
  margin: 0 0 12px;
  line-height: 1.3;
}

.page-faq .section-intro {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0 0 28px;
  max-width: 640px;
}

/* ===== 常见问题手风琴 ===== */
.page-faq .faq-group {
  margin-bottom: 36px;
}

.page-faq .faq-group__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-text);
  margin: 0 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--color-accent);
}

.page-faq .faq-accordion {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  background: var(--color-surface);
  border-radius: var(--faq-item-radius);
  border: 1px solid rgba(10, 37, 64, 0.08);
  border-left: 4px solid transparent;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 18px 56px 18px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-primary);
  line-height: 1.5;
  border-radius: var(--faq-item-radius);
  transition: color 0.2s ease;
}

.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--color-accent);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--color-info);
  outline-offset: -2px;
}

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-label-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 500;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.page-faq .faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  background: var(--color-accent);
  color: #FFFFFF;
}

.page-faq .faq-item__answer {
  padding: 0 20px 22px;
  color: var(--color-text);
  font-size: 0.92rem;
  line-height: 1.75;
  max-width: 720px;
}

.page-faq .faq-item__answer p {
  margin: 0 0 8px;
}

.page-faq .faq-item__answer p:last-child {
  margin-bottom: 0;
}

/* ===== 苹果设备对照问题提交入口 ===== */
.page-faq .faq-submit__inner {
  background: var(--faq-gradient);
  border-radius: calc(var(--faq-panel-radius) + 6px);
  padding: 36px 26px;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-faq .faq-submit__inner::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -30px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(0, 194, 209, 0.2), transparent);
  pointer-events: none;
}

.page-faq .faq-submit__inner::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 108, 44, 0.2), transparent);
  pointer-events: none;
}

.page-faq .faq-submit .section-eyebrow {
  display: block;
  color: #FF6C2C;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-submit__title {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: #FFFFFF;
  margin: 0 0 12px;
  line-height: 1.3;
  position: relative;
  z-index: 1;
}

.page-faq .faq-submit__desc {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0 0 24px;
  max-width: 560px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-submit__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

@media (min-width: 900px) {
  .page-faq .faq-submit__steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-faq .faq-submit__step {
  display: flex;
  gap: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 16px;
}

.page-faq .faq-submit__step-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-faq .faq-submit__step-body strong {
  display: block;
  font-size: 0.88rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.page-faq .faq-submit__step-body p {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  margin: 0;
}

.page-faq .tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-submit__step .tag-pill {
  background: rgba(255, 255, 255, 0.96);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  display: inline-block;
  border: 1px solid rgba(10, 37, 64, 0.06);
}

.page-faq .faq-submit .btn-primary,
.page-faq .faq-guide .btn-primary,
.page-faq .faq-contact .btn-primary {
  position: relative;
  z-index: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-submit .btn-primary:hover,
.page-faq .faq-guide .btn-primary:hover,
.page-faq .faq-contact .btn-primary:hover,
.page-faq .faq-submit .btn-primary:focus-visible,
.page-faq .faq-guide .btn-primary:focus-visible,
.page-faq .faq-contact .btn-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 108, 44, 0.3);
}

/* ===== 说明书与指南 ===== */
.page-faq .faq-guide {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

@media (min-width: 768px) {
  .page-faq .faq-guide {
    grid-template-columns: 280px 1fr;
    gap: 40px;
  }
}

.page-faq .faq-guide__preview {
  position: relative;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

.page-faq .faq-guide__preview::before {
  content: "";
  position: absolute;
  inset: -14px 14px 14px -14px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 108, 44, 0.28), rgba(0, 194, 209, 0.22));
  z-index: 0;
}

.page-faq .faq-guide__image {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 18px;
  box-shadow: var(--shadow-md);
}

.page-faq .faq-guide__content {
  min-width: 0;
}

.page-faq .faq-guide__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-guide__list li {
  position: relative;
  padding-left: 26px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text);
}

.page-faq .faq-guide__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 6px;
  background: var(--color-label-bg);
  border-left: 3px solid var(--color-accent);
}

.page-faq .faq-guide__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.page-faq .btn-ghost:hover,
.page-faq .btn-ghost:focus-visible {
  background: var(--color-primary);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* ===== 联系客服 ===== */
.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 24px;
}

@media (min-width: 640px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-faq .faq-contact__card {
  background: var(--color-surface);
  border-radius: var(--faq-item-radius);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(10, 37, 64, 0.06);
  border-top: 4px solid var(--color-info);
}

.page-faq .faq-contact__card:nth-child(2) {
  border-top-color: var(--color-accent);
}

.page-faq .faq-contact__label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  font-weight: 500;
}

.page-faq .faq-contact__value {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-primary);
  word-break: break-word;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary {
    transition: none;
  }

  .page-faq .faq-item summary::after {
    transition: none;
  }

  .page-faq .faq-category-list a {
    transition: none;
  }

  .page-faq .btn-ghost,
  .page-faq .faq-submit .btn-primary,
  .page-faq .faq-guide .btn-primary,
  .page-faq .faq-contact .btn-primary {
    transition: none;
  }
}